You dont have to pay extra to any host for this service. I would be careful about paying something to register365 for a service you dont understand.
All you want is to login to your administrator panel for the domains and change the dns settings to point to whatever page you wish. This can be done for free with most register companies. I would recommend godaddy.com as cheap, reliable and useful. Inside the admin console you can point every domain you own to the same page as you wish.